As an archaeologist with a mission in the deep South American jungles you find an old inca pyramid. You decide to go inside and behind you a big stone door closes... you are trapped! After venturing further inside the pyramid looking for an exit, you discover demons from hell that is using the pyramid for an storage and science center. You must destroy it while finding the exit!

A mixed bag. It gets off to a poor start, with an inca section that's tedious and easy, but it improves. There's a nice bit with some offices that has some effective replacement textures. The crate maze is really just a big bright room with crates in it, and there's a tedious air conditioning duct maze in the style of Half-Life but not as good. Deserved two and a bit stars; the bad bits outweight the good bits, although it's basically pleasant.